Hot cap



Feb. 12', 1929. Y 1,701,797

` W. R. SCHINDLER HOT CAP Filed Feb. 16, 1926 15) la '6 INVENTOR l 13 f Waite@` Rchiqdler Patented Feb. 12, 1929.

UNITED STATES WALTER R. SCHINDLIER1 OF LOS ANGELES, CALIFORNIA.

HOT CAP.

Application led February This invention relatesto hot caps,.,atype of cover employed to shelter young plants against frost and t effect warming of the earth adjacent to the seed so as to hasten sprouting thereof and growth of the plants.

This invention is an improvement over the construction disclosed in Patent No. 1,340,631, granted to me May 13, 1920, and an object of this invention is to guard against collapse of the larger sizes of caps.

Another object of the present invention is to effect stiifening of the cap by providing a stifening strip extending diametrically of the body of the cap. y

Another object is to secure the stiifening strip in place by the wax that is employed in the waterproofing of the cap and to position the stiffening strip so that it will be protected against dampness, such as may be caused by rain, fog and dew.

Another object is to cut the blank strip, for making a plurality of hot caps, ina manner to expedite the manufacture of the caps.

Further objects and advantages will appear in the subjoined detailed description.

The accompanying drawings illustrate the invention Figure 1 is a broken plan view of a blank strip from which a plurality of hot caps, embodying the invention, are cut, the lines on which the blank is severed being indicated by dotted lines and the stiffening strips being shown in place.

Figure 2 an enlarged plan view of one of the blanks from which the cap is formed after Ait 'is out from the blank strips, said blank being shown inverted from the posin tion shown in Fig. 1.

Figure 3 is a side elevation of a hot cap constructed in accordance with the provisions of this invention from the blank shown in Fig. 2.

Figure 4: is an enlarged plan section on the lino indicated by 1.*4, Fig. 3.

Figure 5 is a plan view of Fig. 3.

Figure 6 is an enlarged sectional elevation on the line indicated by 6 6, Fig. 5.

A typical blank strip from which the 4cap blanks are cut is indicated at 11 and the cap blanks are cut from the strip by severing on the lines indicated at 12, 13 in Fig. 1. One of the blanks cut from the strip 11 is shown at 14 in Fig. 2. Y

The stri 11 is preferably constructed of waterproo paper. This result may be se- 16, 1926. Serial No. 88,536.

cured by oiling or waxing suitable paper. Before the blanks are cut from the strip 11 a stiifening strip 15 of paper is placed centrally of the strip, extending from end to end of the strip 11, as clearly shown in Fig. 1. The strip 15 may be made of the same material as the strip 11, if desired and it is secured in place by a suitable adhesive. The strip 15 may be waterproofed or not, as desired. I prefer to employ a waterproofing adhesive such, for example, as paraffin wax, indicated at 16.

Aft-er the strip 15 is applied to the strip 11, the blanks 111 will be cut from the strip. The lines 12, 13, for severing the strip are arranged so that the edges caused by cutting along said lines, together with the longitudinai redges of the strip, produce Octagon shape blanks. After the blanks have been cut from the strip 11 each will be molded or shaped to forni a hollow body 17. The molding may be accomplished by using appropriately constructed dies, in the manner well understood in this art. `Vhen the blank 111 is being operated on by the dies to shape it, it is preferably positioned in the dies in a. manner to cause the stiifening strip 15 to lie on the inside of the cap. Vhen the blank is operated on by the dies, said dies produce radially extending plaits or folds 13 so as to e'ect a gradual contraction or reduction of the body 17 from top to bottom and, in this instance, the dies will be constructed to forni the body 17 into a cone-shaped top section 1S), a friistoc mical intermediate seetion 20 and a lower frustocoiiical, section 21. The top section 19 is relatively short and the intermediate section is c msiderably longer and converges at a relatively great angle upwardly to its line of 'junction with the top section. The lower section is slightly tapered and converges upwardly to its line of junction with the intermediate section.

Extending outwardly from the lower section 21 is a flanged rim 22 which, when the cap is in place on the ground, is embedded in the earth so as to properly anchor the cap and prevent it from blowing away. A device for embedding the fianged rim( is dis closed in Patent No. 1,357,523, granted to me November 2,1920.

It may be advisable to provide a second stiifening strip 23 extending transversely of the strip 15, especially if the caps are of extremely large size, and such additional stiffening strips 23 may be secured to the blank strip 11 by the saine means and in the seine manner as the stii'lening strip l5. It isto be understood that either Oneor both of the stilfeningt strips 1 5, maj be einployed. i"

The cone-shaped top section 19 and the sla-nting side sections 20, 21 provide a substzintial and stiil' structure Whioh is further strengthened by the folds 18, Additional stiilness is produced .by the strip l5 efr-ril? when desired7 a still further degree oi" stiltening is produced bythe transverse strip 23.

To use the carp described above, it is plu-eed ove' al plant or seed with the flanged rim embedded in the earth. readily zibsxirbed by the oep so es to 'heet AtheY air beneath the cap, thus in turn hea-ting r his results in the earth beneath the Cap. rapid sproutn'igl ofthe seed' and groi :wth oi'- the plant and' the plant will be protected from the direct rays of the snn and also from frost andree'zing winds and agzrinsl those flying; insects which are injurious to young plants. v

I Claim: Y n f 1. A het Cap vcon-rprisingv e hollow7 body pressed from an oetagonal paper blank into shape to provide a cone-shaped top sectionv and a frusto-eonioel: section below the top section and a flanged rim projeetm-g. out- T he skin-s rays are- War-ally from the frustQ-eonieal seetion, and a peper stiiening strip secured to vthe sections: and ianged'rim.

2, hot Gzip Comprising a. hollow body pressed from a single piecek of peper and provided with a top section and with another section below the top section and with an u.t-turned hanged rim, und a paper stillening` strip of materially less Width than the body secured to the fi'zfvansedb rim and to the sections to :rid in suppo ting said seetions.

3. A hot cap comprising e hollow body ,pressed from ev single piece of peper and and a fiangef rim, and' a stilleningv strip oliV paper secured with a. Wax the inner surlaoe o the sections and? to the llzine'ed rimY to fi-id in supporting the top.

nignedl zit' Los Angeles, California,- this 8 day of February, 1926.

WALTER e. sCHI-NDLER.

'ionbelow the top see-tion 

